I'm sorry to hear that your TiVo® is rebooting frequently. I'll be happy to help check this out with you.
First thing that comes to mind, is your box over heating? It maybe worth checking to see if the box is hot to the touch at the time the box is rebooting. If your box is well ventilated I would expect this to be the case.
One other thing I want to check, it's a remote possibility but I want to rule it out anyway if you don't mind helping me check this. When you look at the Mini Guide, what time does it say? If this is incorrect this could be causing the box to reboot.
Keep me posted, I'm here to help if you need me.
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